Outcomes Measures: The primary outcome measure will be the Peds QL questionnaire to assess impact on daily function. This will be assessed at baseline in the ED, by phone at 1 day, 3 days and 1 week after the ED visit, and at the orthopaedic clinic follow-up visit 3 weeks after the ED visit. Secondary outcome measures will include questionnaires assessing demographic data (baseline), pain, satisfaction, adverse effects (baseline, immediately after immobilization applied, 1 day, 3days and 1 week after ED visit by phone, and at the 3 week orthopaedic clinic follow-up visit), and ED treatment time (in ED prior to discharge). At the 3 week orthopaedic surgery clinic follow-up visit, an assessment of the integrity of the immobilization technique will be conducted by a cast technician and fracture alignment/healing and range of motion of affected arm will be conducted by the pediatric orthopaedic surgeon who will be blinded to treatment group.